290 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



chielly white, and third partly white: bill pale brownish or vinaceous 

 ill dried skins, pinkish in life; iris brown; tarsi pale 3'ellowish brown, 

 toes darker. 



Adults in lointer. — Similar to summer adults, but plumage softer 

 and colors perhaps rather deeper, especialh" the gray of chest, etc.; 

 tip of bill more or less dusky. 



YoHiKj in first winter. — Essentially like adults, but the graA'of chest 

 and other under parts decidedh" paler, less pure, and less strongly con- 

 trasted with the more buffy white of abdomen, etc. ; sides and flanks 

 more or less tinged with Imfl'y or light cinnamon; reddish brown of 

 back duller; tertials broadly edged with cinnamon or cinnamon-brown; 

 bill rather darker, more extensively dusky at tip. 



Young. — Pileum and hindneck dull grayish, streaked with blackish; 

 sides of head and neck rather lighter gra}' ish, more obsoletel}" streaked; 

 throat and chest pale grajash, streaked with dusky, the latter more 

 buffy, with the streaks broader or more wedge-shaped; sides and flanks 

 bufl'y graj'ish, streaked with dusky; back rusty brownish (approach- 

 ing mars brown), streaked with blackish; tertials broadly edged with 

 brown; otherwise much like adults, but bill more dusk}" brownish. 



Adult male.— Ij^n^th (skins), 14^.75-157.23 (152.40); wing, 81.53- 

 8(3.61 (81.58); tail, 68. 58-74. 68 (72.14); exposed culmen, 10.67-11.94 

 (11.18); depth of bill at base, 6.60-7.11 (6.86); tarsus, 19.81-21.59 

 (20.57); middle toe, 13.72-15.24 (14.22).^ 



Adult female.— IjQw^th (skins), 140.72-150.88 (144.78); wing, 74.93- 

 83.82 (78.74); tail, 62.99-71.37 (66.55); exposed culmen, 10.41-11.68 

 (10.92); depth of bill at base, 6.60-6.86 (6.73); tarsus, 19.30-21.34 

 (20.57); middle toe, 13.21-15.24 (14.22).^ 



Breeding in mountains of southern Wyoming (Fort Bridger. etc.), 

 Colorado (Summit, San Juan, and Costilla counties, etc.), Utah (Uintah 

 and Wahsatch mountains), Nevada (Toyabe Mountains) and northern 

 New" Mexico (upper Pecos River); migrating in winter to surrounding- 

 lowlands and southward to northeastern Sonora (Bavispe R,. Napolera, 

 etc.), northern Chihuahua, southern New Mexico, etc., casually to 

 southern California (Pasadena, Los Angeles County); accidental east- 

 ward to Michigan (Locke, Ingham County) i 



Strnthus caniceps Woodhouse, Proc. Ac. Nat. Sci. Phila., vi, Dec, 1852, 202 (San 

 Francisco Mt., Arizona; U. S. Nat. Mus.?); in Rep. Sitgreaves' Expl. Zuni 

 and Col. R. , 1853, 83, pi. 3. 



.funco caniceps Baird, Rep. Pacific R. R. Surv., ix, 1858, 468, 927, part; ed. 1860 

 ("Birds N.Am."), atlas, pi. 72, fig. 1; Cat. N. Am. Birds, 1859, no. 353; in 

 Cooper's Orn. Cal., i, 1870, 201, part (includes /. dorsalis). — Coues, Proc. 

 Ac. Nat. Sci. Phila., 1866, 85 (Fort Whipple, Arizona, winter; crit. ).— 

 Allen, Bull. Mus. Comp. Zool., iii, 1872, 177 (mountains of Colorado, 7,500 

 ft. to timber line); Bull. Nutt. Orn. Club, iv, 1879, 123 (Locke, Ingham Co., 

 Michigan, 1 spec. Oct. 22, 1878). — Baikd, Brewer, and Ridgway, Hist. N". 



^ Eight specimens. 



